Boomerang



FIG. 1 is a perspective view of a boomerang showing my new design;

FIG. 2 is a rear elevational view thereof shown on an enlarged scale;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a side elevational view thereof, the side opposite being substantially a mirror image. 

The ornamental design for a boomerang, substantially as shown and described. 